package io;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * 文件复制
 */
public class CopyDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("./image.png");
        FileOutputStream fos = new FileOutputStream("./image_cp.png");
        int d ;
        long start = System.currentTimeMillis();//起始时间
        while((d=fis.read())!=-1){
            fos.write(d);
        }
        long end = System.currentTimeMillis();//结束时间
        System.out.println("复制完毕,耗时:"+(end-start)+"ms");//耗时时间；用于检测复制时间
      //  System.out.println("复制完毕");
        fis.close();
        fos.close();
    }
}
